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Shirin went to an opera house. She appreciated its architecture and furnishing. The curved ceiling draperies, cushions and curtains were perfectly placed. She also saw sound board behind the stage. She now wondered if each of these accessories were placed for the sake aesthetics of the hall or had a scientific reason too.
(a) What is the purpose of curtains, cushions and draperies in an opera house?
(b) How des curved ceiling and sound board help?
(c) List some characteristic qualities of Shirin.